CN204887455U

CN204887455U - Improve osteoacusis speaker of osteoacusis speaker tone quality

Info

Publication number: CN204887455U
Application number: CN201520611399.7U
Authority: CN
Inventors: 郑金波; 陈迁; 陈皞; 齐心
Original assignee: Shenzhen Voxtech Co Ltd
Current assignee: Shenzhen Voxtech Co Ltd
Priority date: 2015-08-13
Filing date: 2015-08-13
Publication date: 2015-12-16
Anticipated expiration: 2025-08-13

Abstract

The utility model discloses an enough improve the osteoacusis speaker of tone quality, this osteoacusis speaker includes a shell, an energy conversion device, the first biography piece that shakes, first biography shake the piece with connect through the physics mode between energy conversion device, first biography shake the piece with connect through the physics mode between the shell, the piece is shaken to first biography can make the speaker produce a harmonic peak, energy conversion device can produce at least one harmonic peak. The utility model discloses a specific design improves the tone quality of osteoacusis speaker, especially low or middle tone quality volume to reach the effect that increases the osteoacusis speaker and wear the comfort level.

Description

A kind of bone-conduction speaker improving bone-conduction speaker tonequality

Technical field

The utility model is related to a kind of high performance bone-conduction speaker and is improved the tonequality of bone-conduction speaker by particular design, low sound quality especially, reduces and leaks sound phenomenon, and increases the method for bone-conduction speaker comfortable wearing degree.

Background technology

Generally, people can acoustic be because air by external ear duct vibration passing to ear-drum, the auditory nerve of the vibratory drive people formed by ear-drum, the thus vibration of perceives sound.Bone-conduction speaker operationally, usually can be delivered to the auditory nerve of people, thus make people hear sound by the skin of people, hypodermis and bone.

Utility model content

The utility model is related to a kind of high performance bone-conduction speaker and is improved the method for bone-conduction speaker tonequality by particular design.Ear frame/the earphone of described bone-conduction speaker involving vibrations unit, connection vibration unit is linked with; Described vibration unit at least comprises a contact-making surface, and described contact-making surface directly or indirectly contacts with user at least partly,

In another embodiment, the utility model provides a kind of bone-conduction speaker improving tonequality, comprises a shell, a transducing head, one first vibration-transmitting plate; Described first vibration-transmitting plate is connected by physics mode with between described transducer apparatus; Described first vibration-transmitting plate is connected by physics mode with between described shell; Described first vibration-transmitting plate can make loud speaker produce a resonance peak; Described transducing head can produce at least one resonance peak;

Optionally, described transducing head comprises at least one oscillating plate and one second vibration-transmitting plate, and this transducing head can produce at least two resonance peaks; Optionally, within the audio frequency range that described two resonance peaks all can be heard at people's ear; Optionally, described transducing head comprises at least one voice coil loudspeaker voice coil and at least one magnetic circuit system; Described voice coil loudspeaker voice coil and described oscillating plate physical connection, described magnetic circuit system and described second vibration-transmitting plate physical connection; Optionally, the stiffness factor of described oscillating plate is greater than the stiffness factor of described second vibration-transmitting plate; Optionally, described first vibration-transmitting plate is flexure strip; Optionally, described second vibration-transmitting plate is flexure strip; Optionally, described first vibration-transmitting plate to center converge like the spokes of a wheel at the hub at least two the first poles; Preferably, described first vibration-transmitting plate thickness is 0.005mm-3mm, and more preferably, thickness is 0.01mm-2mm, more preferably, thickness is 0.01mm-1mm, and further preferably, thickness is 0.02mm-0.5mm.

Accompanying drawing explanation

Fig. 1 is that bone-conduction speaker causes people's ear to produce the process of the sense of hearing.

The outline drawing of the vibration generating portion of a kind of bone-conduction speaker that Fig. 2-A provides for the utility model embodiment.

The structure chart of the vibration generating portion of a kind of bone-conduction speaker that Fig. 2-B provides for the utility model embodiment.

The structure chart of the vibration generating portion of a kind of bone-conduction speaker that Fig. 3 provides for the utility model embodiment.

Fig. 4-A and 4-B is respectively vertical view and the end view of a kind of bone-conduction speaker panel bonding mode in the utility model embodiment.

Fig. 5 is the structure chart of the vibration generating portion of a kind of bone-conduction speaker in the utility model embodiment.

The vibration response curve of a kind of bone-conduction speaker work that Fig. 6 is suitable for by the utility model embodiment.

The vibration response curve of a kind of bone-conduction speaker work that Fig. 7 is suitable for by the utility model embodiment.

Fig. 8 is the structure chart of the vibration generating portion of a kind of bone-conduction speaker in the utility model embodiment.

The structure chart of a kind of bone-conduction speaker that Fig. 9-A and Fig. 9-B provides for the utility model embodiment and compound vibrating device thereof.

The frequency response curve of a kind of bone-conduction speaker that Figure 10 is suitable for by the utility model embodiment.

The structure chart of a kind of bone-conduction speaker that Figure 11 provides for the utility model embodiment and compound vibrating device thereof.

Figure 12-A is the equivalent model figure of a kind of bone-conduction speaker vibration generating portion in the utility model embodiment.

Figure 12-B in a specific embodiment a kind of vibration response curve of bone-conduction speaker that is suitable for.

Figure 12-C in a specific embodiment a kind of vibration response curve of bone-conduction speaker that is suitable for.

Figure 13 is the structure chart of the vibration generating portion of a kind of bone-conduction speaker in a specific embodiment.

Figure 14 is the structure chart of bone-conduction speaker vibration generating portion in a specific embodiment.

Figure 15-A is the application scenarios of bone-conduction speaker in a specific embodiment.

Figure 15-B is the vibration response curve of bone-conduction speaker vibration generating portion in a specific embodiment.

Figure 16 is the structure chart of bone-conduction speaker vibration generating portion in a specific embodiment.

Figure 17 is the structural representation of bone-conduction speaker panel in a specific embodiment.

Embodiment

In order to be illustrated more clearly in the technical scheme of the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, do not limit range of application of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, according to these accompanying drawings, the utility model can be applied to other similar scenes.

As shown in the specification and claims, unless context clearly points out exceptional situation, the word such as " ", " ", " one " and/or " being somebody's turn to do " not refers in particular to odd number, also can comprise plural number.In general, term " comprises " only points out with " comprising " step and element that comprise and clearly identifying, and these steps and element do not form one and exclusively to enumerate, and method or equipment also may comprise other step or element.Term "based" is " at least in part based on ".Term " embodiment " expression " at least one embodiment "; Term " another embodiment " expression " at least one other embodiment ".The related definition of other terms provides in will be described below.

Below, without loss of generality, when describing osteoacusis correlation technique in the utility model, the description of " bone-conduction speaker " or " bone conduction earphone " will be adopted.This description is only a kind of form of osteoacusis application, and for the those of ordinary skill in this field, " loud speaker " or " earphone " also can replace with other similar words, such as " player ", " hearing aids " etc.In fact, the various implementations in the utility model can be applied on the hearing device of other non-loud speaker class easily.Such as, for those skilled in the art, after the general principle understanding bone-conduction speaker, may when not deviating from this principle, various correction in form and details and change is carried out to implementing the concrete mode of bone-conduction speaker and step, especially, in bone-conduction speaker, add ambient sound pickup and processing capacity, make this loud speaker realize the function of hearing aids.Such as, the microphones such as microphone can pick up the sound of user/wearer's surrounding environment, under certain algorithm, (or the signal of telecommunication produced) after acoustic processing are sent to bone-conduction speaker part.Namely bone-conduction speaker through certain amendment, can add the function of picking up surrounding sounds, and after certain signal transacting, passes through bone-conduction speaker part by transmission sound to user/wearer, thus realizes the function of ossiphone.As an example, algorithm mentioned here can comprise noise elimination, automatic growth control, acoustic feedback suppression, wide dynamic range compression, initiatively Context awareness, active anti-noise, directional process, tinnitus process, one or more combination of multi-channel wide dynamic range compression, initiatively chauvent's criterion, volume control etc.

Sound is passed to hearing system by bone by bone-conduction speaker, thus produces the sense of hearing.Fig. 1 is the process that bone-conduction speaker produces the sense of hearing, mainly comprises following step: in step 101, and bone-conduction speaker obtains or produces the signal containing acoustic information; In step 102, bone-conduction speaker produces vibration according to signal; In step 103, by transmission system by vibration passing to sensing terminal 104.In a kind of operative scenario, bone-conduction speaker pickup or produce containing the signal of acoustic information, converts acoustic information to acoustical vibration by transducing head, and by transmission system by transmission sound to sense organ, finally hear sound.Without loss of generality, the main body of hearing system described above, perceptron official rank can be people, also can be the animal with hearing system.It should be noted that and use the description of bone-conduction speaker not form restriction to bone-conduction speaker use scenes for the mankind below, similar description goes for other animal equally.

Be only concrete example to the description of bone-conduction speaker roughly flow process above, should not be considered to be the embodiment of unique feasible.Obviously, for those skilled in the art, after the general principle understanding bone-conduction speaker, may when not deviating from this principle, carry out various correction in form and details and change to implementing the concrete mode of bone-conduction speaker and step, but these are revised and change still within scope described above.Such as, contain between the signal of acoustic information and step 102 vibration generation in step 101 acquisition, additionally can add signal correction or strengthening step, the signal of acquisition in 101 can carry out strengthening or revising according to specific algorithm or parameter by this step.Further, vibrate in step 102 and produce between 103 vibration passing steps, additionally can add vibrating enhanced or revise step.This step can utilize the voice signal of 101 or environmentally parameter the vibration that 102 produce is strengthened or revises.In like manner; this vibrating enhanced or revise step can complete between step 103 and 104; such as noise reduction, acoustic feedback suppression, wide dynamic range compression, automatic growth control, initiatively Context awareness, active anti-noise, directional process, tinnitus process, multi-channel wide dynamic range compression, initiatively chauvent's criterion, volume control are carried out to signal; or other is similar; or more the process of combination in any, these are revised and change still within claims of the present utility model.Method described herein and step in appropriate circumstances with any suitable order, or can realize simultaneously.In addition, when not departing from the spirit and scope of theme described herein, each independent step can be deleted from any one method.The each side of any example as described above can combine with each side of any example in other described examples, to form further example, and can not lose the effect of seeking.

Concrete, in a step 101, bone-conduction speaker can obtain according to different modes or produce the signal containing acoustic information.Acoustic information can refer to video, the audio file with format, also can refer to carry the final data or the file that are converted into sound by particular approach in general sense.Signal containing acoustic information can come from the memory cell of bone-conduction speaker itself, and the information that also can come from beyond bone-conduction speaker produces, stores or transmission system.This place discuss voice signal be not limited to the signal of telecommunication, also can comprise other form outside the signal of telecommunication as light signal, magnetic signal, mechanical signal etc.In principle, in order to vibrative acoustic information, all can be used as voice signal and process as long as this signal includes loud speaker.Voice signal is also not limited to a signal source, can come from multiple signal source.These multiple signal sources can be correlated with and also can be independent of each other.The mode of voice signal transmission or generation can be wired also can be wireless, can be real-time also can be time delay.Such as, bone-conduction speaker can receive the signal of telecommunication containing acoustic information by wired or wireless mode, also directly can obtain data from storage medium, produces voice signal; The assembly with sound collection function can be added in ossiphone, by the sound in pickup environment, convert the mechanical oscillation of sound to the signal of telecommunication, by obtaining the signal of telecommunication meeting particular requirement after amplifier process.Wherein, wired connection includes but not limited to the compound cable using metallic cable, optical cable or metal and optics, such as: coaxial cable, telecommunication cable, flexible cable, spiral cable, nonmetallic sheathed cable, sheath wire, multicore cable, twisted-pair cable, flat cable, shielded type cable, communication cable, paired cable, twin-lead cable and twisted-pair feeder.

Example described above is only used as convenience of description, and the medium of wired connection can also be other type, such as, and the transport vehicle of other signal of telecommunication or light signal etc.Wireless connections include but not limited to radio communication, free space optical communication, acoustic communication and electromagnetic induction etc.Wherein radio communication includes but not limited to, IEEE802.11 series standard, IEEE802.15 series standard (such as Bluetooth technology and purple-bee technology etc.), first generation mobile communication technology, Generation Mobile Telecommunication System technology (such as FDMA, TDMA, SDMA, CDMA, with SSMA etc.), general packet radio service technology, G mobile communication (such as CDMA2000, WCDMA, TD-SCDMA, with WiMAX etc.), forth generation mobile communication technology (such as TD-LTE and FDD-LTE etc.), satellite communication (such as GPS technology etc.), near-field communication (NFC) and other operate in the technology of ISM band (such as 2.4GHz etc.), free space optical communication includes but not limited to visible ray, infra-red signal etc., acoustic communication includes but not limited to sound wave, ultrasonic wave signal etc., electromagnetic induction includes but not limited near field communication technology etc.Example described above is only used as convenience of description, and the medium of wireless connections can also be other type, such as, and the civil radio frequency range of Z-wave technology, other charge and military radio frequency range etc.Such as, as the application scenes of this technology, bone-conduction speaker can obtain by Bluetooth technology the signal containing acoustic information from other equipment, also directly from the memory cell that bone-conduction speaker carries, directly can obtain data, then produce voice signal.

Memory device/memory cell mentioned here, comprise Direct Attached Storage (DirectAttachedStorage), the memory device in the storage systems such as network attached storage (NetworkAttachedStorage) and storage area network (StorageAreaNetwork).Memory device includes but not limited to that common all kinds of memory devices are as solid storage device (solid state hard disc, solid-state hybrid hard disk etc.), mechanical hard disk, USB flash memory, memory stick, storage card (as CF, SD etc.), other drivings (as CD, DVD, HDDVD, Blu-ray etc.), random asccess memory (RAM) and read-only memory (ROM).Wherein RAM has but is not limited to: dekatron, selectron, delay line storage, WILLIAMS-DARLING Ton pipe, dynamic random access memory (DRAM), static random access memory (SRAM), thyristor random asccess memory (T-RAM) and zero capacitance random asccess memory (Z-RAM) etc., ROM has again but is not limited to: magnetic bubble memory, A.O. linear memory, thin-film memory, magnetic plated wire memeory, magnetic core internal memory, magnetic drum memory, CD drive, hard disk, tape, early stage NVRAM (nonvolatile storage), phase-change memory element, the random memory-type internal memory of reluctance type, ferroelectric random stored memory, non-volatile SRAM, flash memory, the electronics formula of erasing can make carbon copies read-only memory, Erasable Programmable Read Only Memory EPROM, programmable read only memory, Mask ROM, floating connection door random access memory, nanometer random asccess memory, racing track internal memory, variable resistance type internal memory, with programmable metallization unit etc.Above-mentioned memory device/memory cell lists some examples, and the operable memory device of this memory device/memory cell is not limited thereto.

In 102, the signal containing acoustic information can convert to and vibrates and produce sound by bone-conduction speaker.The generation vibrated is along with the conversion of energy, and bone-conduction speaker can use specific transducing head to realize signal and change to mechanical oscillation.Coexisting and changing of number of different types energy may be comprised in the process of conversion.Such as, the signal of telecommunication can be directly changed into mechanical oscillation by transducing head, produces sound.Again such as, acoustic information is included in light signal, and a kind of specific transducing head can realize the process being converted to vibration signal by light signal.Other kind of energy that can coexist in the transducing head course of work and change comprises heat energy, magnetic field energy etc.The power conversion mode of transducing head includes but not limited to moving-coil type, electrostatic, piezoelectric type, moving-iron type, pneumatic type, electromagnetic type etc.The frequency response range of bone-conduction speaker and tonequality can be subject to the impact of each physical assemblies performance in different transducing mode and transducing head.Such as, in moving-coil type transducing head, the cylindrical coil be wound around is connected with oscillating plate, coil by signal current drives drives vibration plate vibrates sounding in magnetic field, the distortion of the stretching, extension of oscillating plate material and contraction, fold, size, shape and fixed form, the magnetic density etc. of permanent magnet, all can bring very large impact to the audio quality that bone-conduction speaker is final.Again such as, oscillating plate can be the structure of Mirror Symmetry, centrosymmetric structure or asymmetrical structure; Oscillating plate can be provided with the cavernous structure of interruption, make oscillating plate produce larger displacement, thus allow bone-conduction speaker realize higher sensitivity, improve the power output of vibration and sound; Again such as, oscillating plate is torus structure, arranges the multiple poles converge like the spokes of a wheel at the hub to center in torus, and the number of pole can be two or more.

Obviously, for those skilled in the art, after understanding transducing mode and concrete device can affect the general principle of bone-conduction speaker audio quality, may when not deviating from this principle, suitable choice, combination, correction or change are carried out to the above-mentioned influencing factor mentioned, thus obtains desirable tonequality.Such as, adopt the permanent magnet of high-magnetic-density, more preferably oscillating plate material and design, can obtain better tonequality.

Term used herein " tonequality " can be understood as the quality that can reflect sound, refers to the fidelity of audio frequency after the processes such as treated, transmission.Tonequality describes primarily of loudness, tone and tone color three elements.Loudness is the subjective feeling of people's ear to sound intensity, and it is proportional to the logarithm value of intensity of sound, and intensity of sound sounds more greatly feels louder.And it is relevant with waveform with the frequency of sound.Tone, also known as pitch, refers to the subjective feeling of people's ear to acoustical vibration frequency height.Tone depends primarily on the fundamental frequency of sound, and fundamental frequency is higher, and tone is higher, and it is also relevant with the intensity of sound simultaneously.Tone color refers to the subjective sensation of people's ear to sound characteristics.Tone color depends primarily on the spectrum structure of sound, also relevant with the loudness of sound, duration, the factor such as process of establishing and decay process.The spectrum structure fundamental frequency of sound, tone number, harmonics distribution situation, amplitude size and phase relation describe.Different spectrum structures, just has different tone colors.Even if fundamental frequency is identical with loudness, if harmonic structure is different, tone color is not identical yet.

The implementation method of bone-conduction speaker vibration is a lot, and Fig. 2-A and Fig. 2-B is the structure chart of bone-conduction speaker vibration generating portion in a specific embodiment, comprises shell 210, panel 220, transducing head 230 and connector 240.

The vibration of panel 220 is delivered to auditory nerve by tissue and bone, thus makes people hear sound.Panel 220 can directly contact with human body skin, also can by the vibration passing layer (hereinafter can describe in detail) that is made up of certain material and skin contact.Certain material mentioned here can be selected from low-density material, such as plastics (such as but not limited to high-molecular polythene, blow-molding nylon, engineering plastics etc.), rubber also can be other single or composite materials that can reach same performance.For the kind of rubber, such as but not limited to versatility rubber and Special type rubber.General purpose rubber is including but not limited to natural rubber, isoprene rubber, butadiene-styrene rubber, butadiene rubber, neoprene etc.Special type rubber is again including but not limited to acrylonitrile-butadiene rubber, silicon rubber, fluorubber, polysulfide rubber, polyurethane rubber, chlorohydrin rubber, acrylate rubber, epoxy propane rubber etc.Wherein, butadiene-styrene rubber comprises and is not limited to SBR of emulsion polymerization and solution polymerization styrene-butadiene rubber.For composite material, such as but not limited to reinforcing materials such as glass fibre, carbon fiber, boron fibre, graphite fibre, fiber, graphene fiber, silicon carbide fibre or aramid fibers.Also can be other compound that is organic and/or inorganic material, the such as all kinds of fiberglass of glass fiber reinforcement unsaturated polyester, epoxy resin or phenolic resin as matrix resin composition.Other materials that can be used for making vibration passing layer also comprise one or more the combination in silica gel, polyurethane (PolyUrethane), Merlon (PolyCarbonate).Transducing head 230 realizes based on certain principle the assembly that the signal of telecommunication changes to mechanical oscillation.Panel 220 is connected with transducing head 230, vibrates under the drive of transducing head 230.Connector 240 connects panel 220 and shell 210, for being positioned in shell by transducing head 230.Transducing head 230 by vibration passing to panel 220 time, vibration can pass to shell by connector 240 simultaneously, causes shell 210 to vibrate, also can the mode of vibration of corresponding change panel 220, thus affects the vibration that panel 220 passes to human body skin.

It should be noted that, the mode that transducing head and panel are fixed in shell is not limited to the connected mode that Fig. 2-B describes, obviously, for a person skilled in the art, whether adopt connector 240, or the connector 240 adopting different materials to make, adjustment transducing head 230 or panel 220 are connected to the mode etc. of shell 210, capital shows different mechanical impedance characteristics, produce different vibration passing effects, thus affect the vibration efficiency of vibrational system entirety, produce different tonequality.

Fig. 2-B is depicted as a kind of example of connected mode, and connector 240 can be connected with shell 210 top.Fig. 3 is the example of another kind of connected mode, and panel 320 stretches out from the opening of shell 310, is connected between panel 320 and transducing head 330 by coupling part 350, and is connected by connector 340 with shell 310.

In other embodiment, also with other connected mode, transducing head can be fixed on enclosure interior, such as, can transducing head be fixed on shell inner bottom surface by connector, or (side that transducing head is connected with panel is top by the bottom of transducing head, side is in contrast bottom) be fixed on enclosure interior by spring is unsettled, also can the top of transducing head be connected on shell, or be connected by multiple connector being positioned at diverse location between transducing head with shell, or the combination in any of above multiple connected mode.

In some specific embodiments, connector has certain elasticity.The elasticity of connector is determined by the many-side such as material, thickness, structure of connector.For the material of connector, such as but not limited to, steel (such as but not limited to stainless steel, carbon steel etc.), alloy in lightweight (such as but not limited to aluminium alloy, beryllium copper, magnesium alloy, titanium alloy etc.), plastic cement (such as but not limited to high-molecular polythene, blow-molding nylon, engineering plastics etc.) also can be other single or composite materials that can reach same performance.For composite material, such as but not limited to reinforcing materials such as glass fibre, carbon fiber, boron fibre, graphite fibre, graphene fiber, silicon carbide fibre or aramid fibers.The material forming connector also can be other compound that is organic and/or inorganic material, such as all kinds of fiberglass of glass fiber reinforcement unsaturated polyester, epoxy resin or phenolic resin as matrix resin composition.The thickness of connector is not less than 0.005mm, and preferably, thickness is 0.005mm-3mm, and more preferably, thickness is 0.01mm-2mm, more preferably, thickness is 0.01mm-1mm, and further preferably, thickness is 0.02mm-0.5mm.

The structure of connector can be set to ring-type, preferably, comprise at least one annulus, preferably, comprising at least two annulus, can be donut, also can be non-donut, be connected by least two poles between annulus, pole, from outer shroud to inner ring center radiation, further preferably, comprises at least one oval annulus, further preferably, comprise at least two oval annulus, different oval annulus has different radius of curvature, is connected between annulus by pole, still more preferably, at least one Q-RING is comprised.Connecting-piece structure also can be set to sheet, preferably, sheet arranges pierced pattern, and more preferably, the area of pierced pattern is not less than the area of the non-openwork part of connector.It should be noted that the material of connector in above description, thickness, structure can be combined into different connectors in any way.Such as, cyclic adapting piece can have different thickness distribution, and preferably, strut thickness equals annulus thickness, and further preferably, strut thickness is greater than annulus thickness, and further preferably, the thickness of inner ring is greater than the thickness of outer shroud.

Those of ordinary skill in the art can according to the material of different practical applications decision connector, position and connected mode etc., or above-mentioned different connector attribute is carried out revising, improve or combinationally using, but these are revised and improve still within scope described above.Such as, connector described above is not necessarily necessary, and panel can directly be bridged on shell, also can be bondd by glue and shell.It should be noted that, the shape, size, ratio etc. of the bone-conduction speaker vibration generating portion in practical application are not limited to the content described in Fig. 2-A, Fig. 2-B or Fig. 3, bone-conduction speaker is considering that other may affect bone-conduction speaker sound qualitative factor, the frequency multiplication sound, wearing mode etc. that such as produce, those skilled in the art the content described in figure can make change to a certain degree.

Example only just concrete to the description of bone-conduction speaker vibration generating portion structure above, should not be considered to be the embodiment of unique feasible.Obviously, for those skilled in the art, after understanding general principle, may when not deviating from this principle, various correction and change are carried out to the concrete structure and connected mode of implementing vibration, but these are revised and change still within scope described above.Such as, the coupling part 350 in Fig. 3 can be the part on panel 320, adopts glue to be bonded on transducing head 330; Also can be a part (such as, the bossing on oscillating plate) for transducing head 330, adopt glue to be bonded on panel 320; Also can be an independently assembly, adopt glue to be bonded on panel 320 and transducing head 330 simultaneously.Certainly, the connected mode between coupling part 350 and panel 320 or transducing head 330 is not limited to bonding, and other connected modes that those skilled in the art can be known also are applicable to the utility model, such as, can adopt the mode of clamping or welding.Preferably, the mode that glue bonds directly can be adopted between panel 320 and shell 310, more preferably, can be connected by the assembly being similar to elastic component 340, further preferably, can by adding that outside panel 320 mode of vibration passing layer (hereinafter can describe in detail) is connected on shell 310.It should be noted that coupling part 350 describes the schematic diagram that different inter-module connects, those skilled in the art can adopt has similar functions and difform assembly substitutes, and these substitute and change still within the protection range of foregoing description.

In step 103, sound passes to hearing system by transmission system.Transmission system can be, by medium, acoustical vibration is directly passed to hearing system, also can be included in transmission sound process and pass to hearing system again after certain process.

Such as, vibration is passed to the hearing system of human body by the panel of bone-conduction speaker by tissue, change the material of panel, contact area, shape and/or size, and the interaction force between panel and skin, the transmission efficiency of sound by medium can be affected, thus affect tonequality.Such as, under identical driving, the vibration of the panel transmission of different size has different distributions on wearer's binding face, and then can bring the difference of volume and tonequality.Preferably, the area of panel is not less than 0.15cm ², more preferably, area is not less than 0.5cm ², further preferably, area is not less than 2cm ².Again such as, panel vibrates by the drive of transducing head, the bonding point of panel and transducing head is at the center of panel vibration, preferably, panel is uniform (namely the centre of oscillation is the physical centre of panel) around the mass distribution in the described centre of oscillation, more preferably, make panel around the quality uneven distribution (namely the physical centre of panel is departed from the centre of oscillation) in described vibration.Again such as, an oscillating plate can be connected on multiple panel, shape between multiple panel, material can mutually the same also can be different, can be connected between multiple panel and also can not be connected, multiple panel utilizes multiple approach to transmit acoustical vibration, and the vibration passing mode between different path is different, and the position being delivered to panel is not identical yet, vibration signal between different panels can be complementary, generates comparatively flat frequency response.Again such as, oscillating plate larger for one piece of area is divided into two pieces or the less oscillating plate of polylith area, effectively can improves the uneven vibration that panel deformation causes when high frequency, make frequency response even more ideal.

It should be noted that the physical attribute of panel, such as quality, size, shape, rigidity, vibration damping etc. all can the efficiency of influence surface panel vibration.The panel that those skilled in the art can select suitable material to make according to actual needs, or use different mould that panel is injection molded into different shapes, preferably, the shape of panel can be arranged to rectangle, circle or oval, more preferably, the shape of panel can be rectangle, circle or oval edge are carried out cut after obtain figure (such as but not limited to, circular symmetry cutting is obtained the shape etc. of similar ellipse), further preferably, panel can be arranged to hollow out.Panel material mentioned here includes but not limited to acrylonitrile-butadiene-styrene copolymer (ABS), Merlon (PC), polyamide (PA) and some metals or alloy (as aluminium alloy) etc., relevant parameter comprises the relative density of material, hot strength, modulus of elasticity, Rockwell hardness etc.Preferably, the relative density of panel material is 1.02-1.50, and more preferably, relative density is 1.14-1.45, and further preferably, relative density is 1.15-1.20.The hot strength of panel is not less than 30MPa, and more preferably, hot strength is 33MPa-52MPa, and further preferably, hot strength is not less than 60MPa.The modulus of elasticity of panel material can in 1.0GPa-5.0GPa, and more preferably, modulus of elasticity is at 1.4GPa-3.0GPa, and further preferably, modulus of elasticity is at 1.8GPa-2.5GPa.Similar, the hardness (Rockwell hardness) of panel material can be 60-150, and more preferably, hardness can be 80-120, and further preferably, hardness can be 90-100.Especially, consideration panel material and hot strength simultaneously can be relative density is 1.02-1.1, and hot strength is 33MPa-52MPa, and more preferably, the relative density of panel material is 1.20-1.45, and hot strength is 56-66MPa.

In some other embodiment, the panels outside of bone-conduction speaker is wrapped in vibration passing layer, vibration passing layer and skin contact, and the acoustical vibration of generation is passed to tissue by the vibration system of panel and vibration passing layer composition.Preferably, panels outside wraps up one deck vibration passing layer, more preferably, and panels outside wrapped multiple vibration passing layer; Vibration passing layer can be made up of one or more materials, and the material of different vibration passing layer is formed can be identical, also can be different; Can be mutually superpose on the vertical direction of panel between multi-layer vibration transfer layer, also can be begin to rehearse on the upper berth, direction of panel-level row or the combination of above two kinds of arrangement modes.The area of vibration passing layer can be set as different sizes, and preferably, the area of vibration passing layer is not less than 1cm ², more preferably, the area of vibration passing layer is not less than 2cm ², further preferably, the area of vibration passing layer is not less than 6cm ².

The formation of vibration passing layer can be have certain adsorptivity, flexibility, material chemically, such as plastics (such as but not limited to high-molecular polythene, blow-molding nylon, engineering plastics etc.), rubber also can be other single or composite materials that can reach same performance.For the kind of rubber, such as but not limited to versatility rubber and Special type rubber.General purpose rubber is including but not limited to natural rubber, isoprene rubber, butadiene-styrene rubber, butadiene rubber, neoprene etc.Special type rubber is again including but not limited to acrylonitrile-butadiene rubber, silicon rubber, fluorubber, polysulfide rubber, polyurethane rubber, chlorohydrin rubber, acrylate rubber, epoxy propane rubber etc.Wherein, butadiene-styrene rubber comprises and is not limited to SBR of emulsion polymerization and solution polymerization styrene-butadiene rubber.For composite material, such as but not limited to reinforcing materials such as glass fibre, carbon fiber, boron fibre, graphite fibre, fiber, graphene fiber, silicon carbide fibre or aramid fibers.Also can be other compound that is organic and/or inorganic material, the such as all kinds of fiberglass of glass fiber reinforcement unsaturated polyester, epoxy resin or phenolic resin as matrix resin composition.Other materials that can be used for making vibration passing layer also comprise one or more the combination in silica gel, polyurethane (PolyUrethane), Merlon (PolyCarbonate).

The existence of vibration passing layer can the frequency response of influential system, changes the tonequality of bone-conduction speaker, also can play the protective effect to element in shell simultaneously.Such as, vibration passing layer can change the mode of vibration of panel, makes the frequency response of entire system milder.The mode of vibration of panel is subject to the impact of the factor such as connected mode, vibration frequency of the connected mode of the attribute of panel own, panel and oscillating plate, panel and vibration passing layer.The attribute of panel own includes but not limited to the quality, size, shape, rigidity, vibration damping etc. of panel.Preferably, can adopt panel in uneven thickness (such as but not limited to, face plate center thickness is greater than edge thickness).The connected mode of panel and oscillating plate includes but not limited to glue bonding, clamping or welding etc.; With the connection of vibration passing layer, panel includes but not limited to that glue is connected; Different vibration frequencies can the different mode of vibration of corresponding panel, comprises translation and the torsion translation in various degree of panels en bloc, selects the panel in particular frequency range with certain vibration mode can change the tonequality of bone-conduction speaker.Preferably, specific frequency range mentioned here can be 20Hz-20000Hz, more preferably, frequency range can be 400Hz-10000Hz, and further preferably, frequency range can be 500Hz-2000Hz, again further preferably, frequency range can be 800Hz-1500Hz.

Preferably, vibration passing layer described above is wrapped in panels outside, forms a side of vibration unit.On vibration passing layer, zones of different is different to the transmission effect of vibration.

As a specific embodiment, Fig. 4-A and 4-B are the front view that is connected with vibration passing layer of panel and end view respectively.Wherein, panel 401 and vibration passing layer 403 are bondd by glue 402, and glue bonding part is positioned at panel 401 two ends, and panel 401 is positioned at the shell of vibration passing layer 403 and housing 404 formation.

Glue can be adopted between panel and vibration passing layer to paste completely, then change the attributes such as the quality of panel, size, shape, rigidity, vibration damping, mode of oscillation equivalently, also make vibration passing efficiency higher; Also paste portion bonding can be only used between panel and transfer layer, then between panel and transfer layer there is gas conduction in non-sticking area, can strengthen the transmission of low-frequency vibration, improves the effect of sound medium and low frequency, preferably, glue area accounts for the 1%-98% of panel area, and more preferably, glue area accounts for the 5%-90% of panel area, again preferably, glue area accounts for the 10%-60% of panel area, and still more preferably, glue area accounts for the 20%-40% of panel area; Also glue can not be used between panel and transfer layer to bond, then the vibration passing efficiency of panel and transfer layer is different from the situation using glue bonding, also can change the tonequality of bone-conduction speaker.In the particular embodiment, the bonding method changing glue can change the mode of vibration of corresponding assembly in bone-conduction speaker, thus changes generation and the transmission effect of sound.Further, the character of glue also can affect the tonequality of bone-conduction speaker, such as glue hardness of water, shear strength, tensile strength and ductility etc.Such as, preferably, glue tensile strength is not less than 1MPa, and more preferably, tensile strength is not less than 2MPa, and further preferably, tensile strength is not less than 5MPa; Preferably, the elongation at break of glue is 100%-500%, and more preferably, elongation at break is 200%-400%; Preferably, the shear strength of glue is not less than 2MPa, and more preferably, shear strength is not less than 3MPa; Preferably, the shore hardness of glue is at 25-30, and more preferably, shore hardness is at 30-50.A kind of glue can be used, also the glue of different attribute can be combinationally used.Glue and panel and the adhesion strength between glue and plastic cement also can be arranged on certain limit, such as but not limited to, in 8MPa-14MPa.It should be noted that the vibration passing layer material in embodiment is not limited to silica gel, also can adopt plastics, biomaterial or other there is certain adsorptivity, flexibility, material chemically.Those skilled in the art also can determine type and the attribute of selecting glue according to actual needs, and the panel material bondd with glue and vibration passing layer material, determines the tonequality of bone-conduction speaker to a certain extent.

Fig. 5 is a specific embodiment of each parts connected mode in bone-conduction speaker vibration generating portion.Transducing head 510 is connected on shell 520, is bondd between panel 530 and vibration passing layer 540 by glue 550, and the edge of vibration passing layer 540 is connected with housing 520.In different embodiments, the distribution of change glue 550, hardness or quantity can be passed through, or the hardness etc. changing transfer layer 540 changes the frequency response of bone-conduction speaker, thus change tonequality.Preferably, panel and vibration passing interlayer can not spreading glue, more preferably, panel and vibration passing interlayer can fill glue, further preferably, panel and vibration passing interlayer portion region spreading glue, more further preferably, the region area of panel and vibration passing interlayer spreading glue is not more than the area of panel.

Those skilled in the art can determine the quantity selecting glue according to actual needs, thus reaches the effect regulating loud speaker tonequality.As shown in Figure 6, in one embodiment, reflect that different glue connected modes is on the impact of the frequency response of bone-conduction speaker.Article three, curve respectively corresponding friction transfer layer and glue, does not fill glue between vibration passing layer and panel, and frequency response when filling glue between vibration passing layer and panel.Can find out, relative to the situation filling glue, coat between vibration passing layer and panel a small amount of glue or not cementing time, the resonance frequency of bone-conduction speaker can offset to low frequency.By the bonding situation of glue between vibration passing layer and panel, the impact of vibration passing layer on vibrational system can be reflected.Therefore, change the bonding mode of glue, the frequency response curve of bone-conduction speaker can be made to have obvious change.

The staff of this area can according to the frequency response demand of reality, bonding mode, the quantity of adjustment and improvement glue, thus improves the tonequality of system.Similar, in another embodiment, Fig. 7 reflects that the hardness of different vibration passing layer is on the impact of vibration response curve.Solid line is the vibration response curve corresponding to bone-conduction speaker adopting harder transfer layer, and dotted line is the vibration response curve corresponding to bone-conduction speaker adopting softer transfer layer.Can find out, adopt the vibration passing layer of different hardness that bone-conduction speaker can be made to obtain different frequency responses.The hardness of vibration passing layer is larger, and the ability transmitting dither is stronger; The hardness of vibration passing layer is less, then the ability transmitting low-frequency vibration is stronger.Select the vibration passing layer (being not limited to silica gel, plastics etc.) of different materials can obtain different tonequality.Such as, the vibration passing layer that bone-conduction speaker uses 45 degree of silica gel to make can obtain good bass effect, and the vibration passing layer using 75 degree of silica gel to make can obtain good high pitch effect.Low frequency mentioned here refers to the sound being less than 500Hz, and intermediate frequency refers to the sound of 500Hz-4000Hz scope, and high frequency refers to the sound being greater than 4000Hz.

Certainly, the above description on glue and vibration passing layer is only a kind of embodiment that can affect bone-conduction speaker tonequality, should not be regarded as the embodiment of unique feasible.Obviously; concerning one of skill in the art; after understanding affects the general principle of bone-conduction speaker tonequality; may when not deviating from this principle; adjust bone-conduction speaker vibrating each device and connected mode in generating portion and change, but these adjustment and change are still within protection range described above.Such as, the material of vibration passing layer can be arbitrary, also can be customize according to the use habit of user.There is use solidification between vibration passing layer and panel after the glue of different hardness, also may have an impact to the tonequality of bone-conduction speaker.In addition, the thickness increasing vibration passing layer can be equivalent to the quality added in the vibrational system of composition, also can reach the effect of the resonance frequency decline being system.Preferably, the thickness of transfer layer is 0.1mm-10mm, and more preferably, thickness is 0.3mm-5mm, more preferably, thickness is 0.5mm-3mm, and further preferably, thickness is 1mm-2mm.The hot strength, viscosity, hardness, tearing strength, percentage elongation etc. of transfer layer also can have an impact to the tonequality of system.Power required on unit range when the hot strength of transfer layer material refers to and causes transfer layer sample to tear, preferably, hot strength is 3.0MPa-13MPa, more preferably, hot strength is 4.0MPa-12.5MPa, and further preferably, hot strength is 8.7MPa-12MPa.Preferably, the shore hardness of transfer layer is 5-90, and more preferably, shore hardness is 10-80, and further preferably, shore hardness is 20-60.When the percentage elongation of transfer layer refers to that transfer layer ruptures relatively and the percentage that increases of raw footage, preferably, percentage elongation is between 90%-1200%, and more preferably, percentage elongation is between 160%-700%, and further preferably, percentage elongation is between 300%-900%.The resistance that otch or indentation expand is hindered when the tearing strength of transfer layer refers to apply strength on the transfer layer having otch, preferably, tearing strength is between 7kN/m-70kN/m, more preferably, tearing strength is between 11kN/m-55kN/m, further preferably, tearing strength is between 17kN/m-47kN/m.

In the vibrational system that panel described above and vibration passing layer form, except changing the physical attribute of panel and transfer layer, and the aspect such as the bonding mode of panel and vibration passing layer, also can from the performance of other aspects change bone-conduction speaker.

A kind of well-designed vibration generating portion comprising vibration passing layer effectively can reduce bone-conduction speaker further and leak sound.Preferably, leakage sound can be reduced in the punching of vibration passing layer surface.As shown in Figure 8, vibration passing layer 840 leads to glue 850 and bonds with panel 830 embodiment, on vibration passing layer with the bonded areas degree of convexity of panel higher than adhesive free region on vibration passing layer 840, be a cavity below non-bonded region.On vibration passing layer 840, non-bonded region and shell 820 surface offer respectively and draw acoustic aperture 860.Preferably, offer the non-bonded region of partly drawing acoustic aperture not contact with user.On the one hand, draw acoustic aperture 860 and effectively can reduce non-bonded region area on vibration passing layer 840, vibration passing layer inner air and outer air can be made penetrating, reduce inner and outer air pressure poor, thus reduce the vibration of non-bonded region; On the other hand, drawing acoustic aperture 860 can vibrate shell 820 inner air the outside that the sound wave formed leads to shell 820, vibrates and promotes the leakage speech ripple that shell outer air formed and disappear mutually, leak speech wave amplitude to reduce with shell 820.Concrete, the leakage sound size of bone-conduction speaker any point is in space proportional to the acoustic pressure P at this some place,

Wherein,

P＝P ₀+P ₁+P ₂(1)

P ₀the acoustic pressure that shell (on involving vibrations transfer layer not with the part of skin contact) generates at above-mentioned point, P ₁be shell side draw sound that acoustic aperture the transmits acoustic pressure at above-mentioned point, P ₂that vibration passing layer draws sound that acoustic aperture the transmits acoustic pressure at above-mentioned point, P ₀, P ₁, P ₂respectively:

Wherein, k represents wave vector, ρ ₀represent atmospheric density, ω represents the angular frequency of vibration, and R (x ', y ') to represent in sound source a bit any distance in space, S ₀the shell surface territory do not contacted with face, S ₁the territory, perforate face that acoustic aperture is drawn in shell side, S ₂the strength of sound source of the territory, perforate face of vibration passing layer drawing acoustic aperture, W (x, y) representation unit area, represent the phase difference of the acoustic pressure that different sound source a bit produces in space.It should be noted that, vibration passing layer exist not with the subregion of skin contact (in such as Fig. 8, the fringe region drawn residing for acoustic aperture 860 on vibration passing layer 840), described region is subject to the impact of panel and case vibration and produces vibration, thus radiation sound to external world, above mentioned shell surface territory should to comprise on this type of vibration passing layer not with the part of skin contact.In space, the acoustic pressure (when angular frequency is ω) of any point can be expressed as:

Our target reduces the value of P as far as possible, thus reach the effect reducing and leak sound.In actual use, the size and number of being drawn acoustic aperture by adjustment can adjustment factor A1, A2, and the position of acoustic aperture is drawn in adjustment can control phase value.After the vibrational system understanding panel, transducing head, vibration passing layer and shell composition can affect the principle of bone-conduction speaker tonequality, those skilled in the art can be according to actual needs, adjustment draw acoustic aperture shape, to offer on position, quantity, size and hole damping etc., thus reach the object suppressing to leak sound.Such as, it can be one or more for drawing acoustic aperture, preferably has multiple.Draw acoustic aperture for what lay in shell side face ring-type, the acoustic aperture quantity of drawing in each laying region can be one or more, such as 4-8.The shape of drawing acoustic aperture can be circular, ellipse, rectangle or strip.On a bone-conduction speaker draw that acoustic aperture can adopt shape identical draw acoustic aperture, also can adopt multiple difform combination of drawing acoustic aperture.Such as, what vibration passing layer and shell side laid difformity and quantity respectively draws acoustic aperture, on vibration passing layer draw that acoustic aperture number density is greater than shell side draw acoustic aperture number density.Again such as, vibration passing layer is laid and pays a multiple aperture, can effectively reduce vibration passing layer not with the area of skin contact part, thus reduce the leakage sound produced by this part.Again such as, drawing in acoustic aperture on vibration passing layer/shell side increases damping material or sound-absorbing material, can add the object that high inhibition leaks sound further.Further, drawing acoustic aperture easily extensible described in is that other is convenient to the air vibration in shell to conduct material or the structure of shell.Such as, use phase adjustment material (such as but not limited to sound-absorbing material) as the portion of material of shell, the air vibration phase place making it conduct and the vibration phase of other parts of shell within the scope of 270 °, thus play the effect that sound disappears mutually at 90 °.Again further, by regulating the connected mode between transducing head and shell, the phase place of other partial vibrations of shell can be changed, also can make it and drawing phase difference that acoustic aperture conducts the sound at 90 ° within the scope of 270 °, thus play the effect that sound disappears mutually.Such as, Flexible Connector is adopted between transducing head and shell, for the material of connector, such as but not limited to, steel (such as but not limited to stainless steel, carbon steel etc.), alloy in lightweight (such as but not limited to aluminium alloy, beryllium copper, magnesium alloy, titanium alloy etc.), plastic cement (such as but not limited to high-molecular polythene, blow-molding nylon, engineering plastics etc.) also can be other single or composite materials that can reach same performance.For composite material, such as but not limited to reinforcing materials such as glass fibre, carbon fiber, boron fibre, graphite fibre, graphene fiber, silicon carbide fibre or aramid fibers.The material forming connector also can be other compound that is organic and/or inorganic material, such as all kinds of fiberglass of glass fiber reinforcement unsaturated polyester, epoxy resin or phenolic resin as matrix resin composition.The thickness of connector is not less than 0.005mm, and preferably, thickness is 0.005mm-3mm, and more preferably, thickness is 0.01mm-2mm, more preferably, thickness is 0.01mm-1mm, and further preferably, thickness is 0.02mm-0.5mm.The structure of connector can be set to ring-type, preferably, comprise at least one annulus, preferably, comprising at least two annulus, can be donut, also can be non-donut, be connected by least two poles between annulus, pole, from outer shroud to inner ring center radiation, further preferably, comprises at least one oval annulus, further preferably, comprise at least two oval annulus, different oval annulus has different radius of curvature, is connected between annulus by pole, still more preferably, at least one Q-RING is comprised.Connecting-piece structure also can be set to sheet, preferably, sheet arranges pierced pattern, and more preferably, the area of pierced pattern is not less than the area of the non-openwork part of connector.It should be noted that the material of connector in above description, thickness, structure can be combined into different connectors in any way.Such as, cyclic adapting piece can have different thickness distribution, and preferably, strut thickness equals annulus thickness, and further preferably, strut thickness is greater than annulus thickness, and further preferably, the thickness of inner ring is greater than the thickness of outer shroud.Lay the description of drawing acoustic aperture about shell to come across and to disclose in the Chinese Patent Application No. 201410005804.0 submitted on January 6th, 2014, name is called " a kind of method and bone-conduction speaker suppressing bone-conduction speaker leakage sound ", and this patent documentation quotes in full in this as reference.

An embodiment of the present utility model to the description of sound-absorbing hole above; do not form and the restriction in tonequality, suppression leakage sound etc. is being improved to bone-conduction speaker; the utility model people of this area can by carrying out various correction and improvement to execution mode described above, and these are revised and improve still within protection range described above.Such as, preferably, drawing acoustic aperture is only opened on vibration passing layer, more preferably, draw the region that acoustic aperture only starts not overlap with panel at vibration passing layer, further preferably, draw acoustic aperture and be opened on the region do not contacted with user, again preferably, draw acoustic aperture inside vibration unit, be opened on a cavity.Again such as, draw acoustic aperture and also can be opened in outer shell bottom wall, be opened in drawing acoustic aperture quantity and can being one of diapire, being arranged on bottom wall central, also can be multiple, be arranged to around bottom wall central in the form of a ring circumference be uniformly distributed.Again such as, draw acoustic aperture and can be opened on side wall of outer shell, be opened in drawing acoustic aperture quantity and can being one of side wall of outer shell, also can be multiple, be uniformly distributed in circumference.

In step 104, the tonequality that human feeling arrives is also relevant with the hearing system of human body, and different crowd may be different to the sensitivity of the sound of different frequency scope.In certain embodiments, the sensitivity of the sound to different frequency of human body can be reflected by equal loudness contour.Some crowd is insensitive to the sound in particular frequency range in voice signal, then show the response intensity of respective frequencies in equal loudness contour lower than the response intensity in other frequencies.Such as, some crowd is insensitive to high-frequency sound signal, in equal loudness contour, namely shows as intensity response at corresponding high-frequency signal lower than the intensity response at other frequency place; Some crowd's centering low frequency sound signals is insensitive, equal loudness contour then shows as intensity response at corresponding medium and low frequency signal lower than the intensity response at other frequency place.Low frequency mentioned here refers to the sound being less than 500Hz, and intermediate frequency refers to the sound of 500Hz-4000Hz scope, and high frequency refers to the sound being greater than 4000Hz.To one skilled in the art, in the above description to human auditory's sensitivity, " equal loudness contour " can replace with similar word, such as, and " contour of equal loudness ", " hearing response curve " etc.In fact, human body also can be regarded as a kind of frequency response of sound to hearing sensitivity, in the utility model each embodiment description in, in conjunction with the sensitivity of human body to sound and the frequency response of bone-conduction speaker, final body reveals the tonequality of bone-conduction speaker.

As shown in Figure 3, the mode of vibration of transducing head 330 in bone-conduction speaker vibrational system, and the mode be connected with shell 310 can have an impact to the audio of system.Preferably, transducing head comprises an oscillating plate, vibration-transmitting plate, one group of coil and a magnetic circuit system, and more preferably, transducing head comprises the compound vibrating device be made up of multiple oscillating plate and vibration-transmitting plate.The sonorific frequency response of system is subject to the impact of the physical property of oscillating plate and vibration-transmitting plate, selects the size of specific oscillating plate and vibration-transmitting plate, shape, material, thickness and vibration passing mode etc., can produce the audio meeting actual requirement.

The embodiment of a compound vibrating device is as shown in Fig. 9-A and Fig. 9-B, comprise: the complex vibration parts that vibration-transmitting plate 901 and oscillating plate 902 form, described vibration-transmitting plate 901 is set to one first torus 913, and in this first torus, being provided with three first poles 914 converge like the spokes of a wheel at the hub to center, the center of its converge like the spokes of a wheel at the hub center and described oscillating plate 902 is fixed.The center of described oscillating plate 902 is the groove 920 coordinating described converge like the spokes of a wheel at the hub center and the first pole.Described oscillating plate 902 is arranged has second torus 921 different from described vibration-transmitting plate 901 radius, and slightly thick three second poles 922 different from described first pole 914, first pole 914 and described second pole 922 described in when assembling are staggered settings, and can be, but not limited to is 60 degree of angles.

Above-mentioned first pole and the second pole can adopt straight-bar or be arranged to other shape meeting particular requirement, and pole number can be set to two or more, adopt symmetrical or asymmetric arrangement, to meet the requirement of the aspects such as economic, practical effect.Described vibration-transmitting plate 901 has thin thickness and can increase elastic force, and vibration-transmitting plate 901 is groove 920 centers of being stuck in oscillating plate 902.Voice coil loudspeaker voice coil 908 is provided with on the downside of the second torus 921 being bonded in oscillating plate 902.Compound vibrating device also comprises base plate 912, and this base plate 912 is provided with toroidal magnet 910, in this toroidal magnet 910, be provided with inner magnet 911 with one heart; The end face of described inner magnet 911 is provided with interior magnetic conductive board 909, on described toroidal magnet 910, be provided with annular magnetic conductive board 907 simultaneously, above described annular magnetic conductive board 907, be fixedly installed packing ring 906, the first torus 913 of described vibration-transmitting plate 901 is fixedly connected with this packing ring 906.This whole compound vibrating device is connected with outside by a panel 930, and described panel 930 is connected converge like the spokes of a wheel at the hub center of described vibration-transmitting plate 901, and the center at vibration-transmitting plate 901 and oscillating plate 902 that is fixed.

Utilize the compound vibrating device of oscillating plate and vibration-transmitting plate composition, obtain frequency response as shown in Figure 10, two resonance peaks are created by double complex vibration, by regulating the parameter such as size and material of two parts, allow resonance peak be moved, the resonance peak of low frequency moves to getting over low frequency, and the resonance peak of high frequency is to getting over high-frequency mobile, preferably, the stiffness factor of oscillating plate is greater than the stiffness factor of vibration-transmitting plate.Finally can fit to the frequency response curve of the dotted line shown in Figure 10, namely ideally flat frequency response, the scope of these resonance peaks can be arranged within the frequency range of the sound that people's ear can be heard, also can not be wherein, preferably, in the frequency range of sound that two resonance peaks can not be heard at people's ear; More preferably, within the frequency range of the sound that resonance peak can be heard at people's ear, outside the frequency range of the sound that another resonance peak can be heard at people's ear; Preferred, described resonance peak position is not higher than 30000Hz; Preferred, in the frequency range of the sound that two resonance peaks all can be heard at people's ear; And still more preferably, in the frequency range of the sound that two resonance peaks all can be heard at people's ear, and its crest frequency is between 80Hz-18000Hz; Still more preferably, in the frequency range of the sound that two resonance peaks all can be heard at people's ear, and its peak value is between 200Hz-15000Hz; Still more preferably, in the frequency range of the sound that two resonance peaks all can arrive at people's ear, and its peak value is between 500Hz-12000Hz; Still more preferably, in the frequency range of the sound that two resonance peaks all can arrive at people's ear, and its peak value is between 800Hz-11000Hz.The frequency of the peak value of resonance peak preferably can have certain gap, and such as, the peak value of two resonance peaks differs at least 500Hz; Preferably, the peak value of two resonance peaks differs at least 1000Hz; Still more preferably, the peak value of two resonance peaks differs at least 2000Hz; Again still more preferably, the peak value of two resonance peaks differs at least 5000Hz.In order to reach reasonable effect, two resonance peaks can all within people's ear range of audibility, and the crest frequency of resonance peak differs at least 500Hz; Preferably, two resonance peaks can all within people's ear range of audibility, and the peak value of two resonance peaks differs at least 1000Hz; More preferably, two resonance peaks can all within people's ear range of audibility, and the peak value of two resonance peaks differs at least 1000Hz; Again further preferably, two resonance peaks can all within people's ear range of audibility, and the peak value of two resonance peaks differs at least 2000Hz; And still more preferably, two resonance peaks can all within people's ear range of audibility, and the peak value of two resonance peaks differs at least 3000Hz; Can also still more preferably, two resonance peaks can all within people's ear range of audibility, and the peak value of two resonance peaks differs at least 4000Hz.In two resonance peaks can one within people's ear range of audibility, another is outside people's ear range of audibility, and the crest frequency of two resonance peaks differs at least 500Hz; Preferably, a resonance peak is within people's ear range of audibility, and another is outside people's ear range of audibility, and the crest frequency of two resonance peaks differs at least 1000Hz; More preferably, a resonance peak is within people's ear range of audibility, and another is outside people's ear range of audibility, and the crest frequency of two resonance peaks differs at least 2000Hz; Further preferably, a resonance peak is within people's ear range of audibility, and another is outside people's ear range of audibility, and the crest frequency of two resonance peaks differs at least 3000Hz; Still more preferably, a resonance peak is within people's ear range of audibility, and another is outside people's ear range of audibility, and the crest frequency of two resonance peaks differs at least 4000Hz.Two resonance peaks can all between frequency 5Hz-30000Hz, and the crest frequency of two resonance peaks differs at least 400Hz; Preferably, two resonance peaks can all between frequency 5Hz-30000Hz, and the crest frequency of two resonance peaks differs at least 1000Hz; More preferably, two resonance peaks can all between frequency 5Hz-30000Hz, and the crest frequency of two resonance peaks differs at least 2000Hz; Further preferably, two resonance peaks can all between frequency 5Hz-30000Hz, and the crest frequency of two resonance peaks differs at least 3000Hz; Still more preferably, two resonance peaks can all between frequency 5Hz-30000Hz, and the crest frequency of two resonance peaks differs at least 4000Hz.Two resonance peaks can all between frequency 20Hz-20000Hz, and the crest frequency of two resonance peaks differs at least 400Hz; Preferably, two resonance peaks can all between frequency 20Hz-20000Hz, and the crest frequency of two resonance peaks differs at least 1000Hz; More preferably, two resonance peaks can all between frequency 20Hz-20000Hz, and the crest frequency of two resonance peaks differs at least 2000Hz; Further preferably, two resonance peaks can all between frequency 20Hz-20000Hz, and the crest frequency of two resonance peaks differs at least 3000Hz; Still more preferably, two resonance peaks can all between frequency 20Hz-20000Hz, and the crest frequency of two resonance peaks differs at least 4000Hz.Two resonance peaks can all between frequency 100Hz-18000Hz, and the crest frequency of two resonance peaks differs at least 400Hz; Preferably, two resonance peaks can all between frequency 100Hz-18000Hz, and the crest frequency of two resonance peaks differs at least 1000Hz; More preferably, two resonance peaks can all between frequency 100Hz-18000Hz, and the crest frequency of two resonance peaks differs at least 2000Hz; Further preferably, two resonance peaks can all between frequency 100Hz-18000Hz, and the crest frequency of two resonance peaks differs at least 3000Hz; Still more preferably, two resonance peaks can all between frequency 100Hz-18000Hz, and the crest frequency of two resonance peaks differs at least 4000Hz.Two resonance peaks can all between frequency 200Hz-12000Hz, and the crest frequency of two resonance peaks differs at least 400Hz; Preferably, two resonance peaks can all between frequency 200Hz-12000Hz, and the crest frequency of two resonance peaks differs at least 1000Hz; More preferably, two resonance peaks can all between frequency 200Hz-12000Hz, and the crest frequency of two resonance peaks differs at least 2000Hz; Further preferably, two resonance peaks can all between frequency 200Hz-12000Hz, and the crest frequency of two resonance peaks differs at least 3000Hz; Still more preferably, two resonance peaks can all between frequency 200Hz-12000Hz, and the crest frequency of two resonance peaks differs at least 4000Hz.Two resonance peaks can all between frequency 500Hz-10000Hz, and the crest frequency of two resonance peaks differs at least 400Hz; Preferably, two resonance peaks can all between frequency 500Hz-10000Hz, and the crest frequency of two resonance peaks differs at least 1000Hz; More preferably, two resonance peaks can all between frequency 500Hz-10000Hz, and the crest frequency of two resonance peaks differs at least 2000Hz; Further preferably, two resonance peaks can all between frequency 500Hz-10000Hz, and the crest frequency of two resonance peaks differs at least 3000Hz; Still more preferably, two resonance peaks can all between frequency 500Hz-10000Hz, and the crest frequency of two resonance peaks differs at least 4000Hz.So just widen the resonance response scope of loud speaker, be met the tonequality of condition.It should be noted that, in the use procedure of reality, multiple vibration-transmitting plate and oscillating plate can be set, form multi-layer vibration structure, Hz-KHzs corresponding different respectively, realize the loudspeaker vibration that gamut full range rings high-quality, or make frequency response curve reach instructions for use in some particular frequency range.Such as, in ossiphone, in order to meet normal good hearing requirement, can the one or more oscillating plates of selective resonance frequency in the scope of 100Hz-10000Hz, vibration-transmitting plate form transducing head.The description of the compound vibrating device formed about oscillating plate and vibration-transmitting plate comes across and discloses in the Chinese Patent Application No. 201110438083.9 submitted on December 23rd, 2011, name is called that in the patent application of " a kind of bone-conduction speaker and compound vibrating device thereof ", this patent documentation quotes in full in this as reference.

As shown in figure 11, in another embodiment, an oscillating plate 1102 is comprised in vibrational system, first vibration-transmitting plate 1103 and the second vibration-transmitting plate 1101, oscillating plate 1102 and the second vibration-transmitting plate 1101 are fixed on shell 1119 by the first vibration-transmitting plate 1103, the compound vibration systems be made up of oscillating plate 1102, first vibration-transmitting plate 1103 and the second vibration-transmitting plate 1101 can produce and be no less than two resonance peaks, in the hearing system range of audibility, produce flat frequency response curve more, thus improve the tonequality of bone-conduction speaker.Vibrational system equivalent model is as shown in Figure 12-A:

Wherein, 1201 is shell, 1202 is panel, and 1203 is voice coil loudspeaker voice coil, and 1204 is magnetic circuit vibrates, 1205 is the first vibration-transmitting plate, 1206 is the second vibration-transmitting plate, and 1207 is oscillating plate, wherein, first vibration-transmitting plate, the second vibration-transmitting plate and oscillating plate are all abstracted into the element containing elasticity and damping, and shell, panel, voice coil loudspeaker voice coil and magnetic circuit system can all be abstracted into equivalent mass block.The vibration equation of system can be expressed as:

m ₆x″ ₆+R ₆(x ₆-x ₅)′+k ₆(x ₆-x ₅)＝F(6)

m ₇x″ ₇+R ₇(x ₇-x ₅)′+k ₇(x ₇-x ₅)＝-F(7)

m ₅x″ ₅-R ₆(x ₆-x ₅)′-R ₇(x ₇-x ₅)′+R ₈x′ ₅+k ₈x ₅-k ₆(x ₆-x ₅)-k ₇(x ₇-x ₅)＝0(8)

Wherein F is actuating force, k ₆be the equivalent stiffness coefficient of the second vibration-transmitting plate, k ₇for the equivalent stiffness coefficient of oscillating plate, k ₈be the equivalent stiffness coefficient of the first vibration-transmitting plate, R ₆be the equivalent damping of the second vibration-transmitting plate, R ₇for the equivalent damping of oscillating plate, R ₈be the equivalent damping of the first vibration-transmitting plate, m ₅for the quality of panel, m ₆for the quality of magnetic circuit system, m ₇for voice coil loudspeaker voice coil quality, x ₅for slab movement, x ₆for magnetic circuit system displacement, x ₇for voice coil loudspeaker voice coil displacement.Then can show that the amplitude of panel 1202 is:

Wherein, ω represents the angular frequency of vibration, f ₀representation unit actuating force.

The vibrational system of bone-conduction speaker by panel by vibration passing to user, from formula (9), the vibration efficiency of system is relevant with vibration damping to the stiffness factor of oscillating plate, the first vibration-transmitting plate, the second vibration-transmitting plate, preferably, and the stiffness factor k of oscillating plate ₇be greater than the second Oscillating Coefficients k ₆, the stiffness factor k of oscillating plate ₇be greater than the first Oscillating Coefficients k ₈.Wherein, there is the resonance peak number of triple compound vibration systems generations of the first vibration-transmitting plate more than the resonance peak not having the compound vibration systems of the first vibration-transmitting plate to produce, preferably, have three resonance peaks at least; More preferably, within the scope having at least a resonance peak can not hear at people's ear; Preferred, described resonance peak position is not higher than 30000Hz; More preferably, within the scope that resonance peak all can be heard at people's ear; Still more preferably, within the scope that resonance peak all can be heard at people's ear, and its crest frequency is not higher than 18000Hz; Still more preferably, in the frequency range of the sound that resonance peak all can be heard at people's ear, and its peak value is between 100Hz-15000Hz; Still more preferably, in the frequency range of the sound that resonance peak all can arrive at people's ear, and its peak value is between 200Hz-12000Hz; Still more preferably, in the frequency range of the sound that resonance peak all can arrive at people's ear, and its peak value is between 500Hz-11000Hz.The frequency of the peak value of resonance peak preferably can have certain gap, and such as, the peak value that at least there are two resonance peaks differs at least 200Hz; Preferably, the peak value that at least there are two resonance peaks differs at least 500Hz; More preferably, the peak value that at least there are two resonance peaks differs at least 1000Hz; Again further preferably, the peak value that at least there are two resonance peaks differs at least 2000Hz; Again still more preferably, the peak value that at least there are two resonance peaks differs at least 5000Hz.In order to reach reasonable effect, resonance peak can all within people's ear range of audibility, and the crest frequency that at least there are two resonance peaks differs at least 500Hz; Preferably, resonance peak can all within people's ear range of audibility, and the peak value that at least there are two resonance peaks differs at least 1000Hz; More preferably, resonance peak can all within people's ear range of audibility, and the peak value that at least there are two resonance peaks differs at least 1000Hz; Again further preferably, resonance peak can all within people's ear range of audibility, and the peak value that at least there are two resonance peaks differs at least 2000Hz; And still more preferably, resonance peak can all within people's ear range of audibility, and the peak value that at least there are two resonance peaks differs at least 3000Hz; Can also still more preferably, resonance peak can all within people's ear range of audibility, and the peak value that at least there are two resonance peaks differs at least 4000Hz.Can have two in resonance peak within people's ear range of audibility, another is outside people's ear range of audibility, and the crest frequency that at least there are two resonance peaks differs at least 500Hz; Preferably, two resonance peaks are within people's ear range of audibility, and another resonance peak is outside people's ear range of audibility, and the crest frequency that at least there are two resonance peaks differs at least 1000Hz; More preferably, two resonance peaks are within people's ear range of audibility, and another is outside people's ear range of audibility, and the crest frequency that at least there are two resonance peaks differs at least 2000Hz; Further preferably, two resonance peaks are within people's ear range of audibility, and another is outside people's ear range of audibility, and the crest frequency that at least there are two resonance peaks differs at least 3000Hz; Still more preferably, two resonance peaks are within people's ear range of audibility, and another is outside people's ear range of audibility, and the crest frequency that at least there are two resonance peaks differs at least 4000Hz.Can have one in resonance peak within people's ear range of audibility, two other is outside people's ear range of audibility, and the crest frequency that at least there are two resonance peaks differs at least 500Hz; Preferably, a resonance peak is within people's ear range of audibility, and two other resonance peak is outside people's ear range of audibility, and the crest frequency that at least there are two resonance peaks differs at least 1000Hz; More preferably, a resonance peak is within people's ear range of audibility, and two other is outside people's ear range of audibility, and the crest frequency that at least there are two resonance peaks differs at least 2000Hz; Further preferably, a resonance peak is within people's ear range of audibility, and two other is outside people's ear range of audibility, and the crest frequency that at least there are two resonance peaks differs at least 3000Hz; Still more preferably, a resonance peak is within people's ear range of audibility, and two other is outside people's ear range of audibility, and the crest frequency that at least there are two resonance peaks differs at least 4000Hz.Resonance peak can all between frequency 5Hz-30000Hz, and the crest frequency that at least there are two resonance peaks differs at least 400Hz; Preferably, resonance peak can all between frequency 5Hz-30000Hz, and the crest frequency that at least there are two resonance peaks differs at least 1000Hz; More preferably, resonance peak can all between frequency 5Hz-30000Hz, and the crest frequency that at least there are two resonance peaks differs at least 2000Hz; Further preferably, resonance peak can all between frequency 5Hz-30000Hz, and the crest frequency that at least there are two resonance peaks differs at least 3000Hz; Still more preferably, resonance peak can all between frequency 5Hz-30000Hz, and the crest frequency that at least there are two resonance peaks differs at least 4000Hz.Resonance peak can all between frequency 20Hz-20000Hz, and the crest frequency that at least there are two resonance peaks differs at least 400Hz; Preferably, resonance peak can all between frequency 20Hz-20000Hz, and the crest frequency that at least there are two resonance peaks differs at least 1000Hz; More preferably, resonance peak can all between frequency 20Hz-20000Hz, and the crest frequency that at least there are two resonance peaks differs at least 2000Hz; Further preferably, resonance peak can all between frequency 20Hz-20000Hz, and the crest frequency that at least there are two resonance peaks differs at least 3000Hz; Still more preferably, resonance peak can all between frequency 20Hz-20000Hz, and the crest frequency that at least there are two resonance peaks differs at least 4000Hz.Resonance peak can all between frequency 100Hz-18000Hz, and the crest frequency that at least there are two resonance peaks differs at least 400Hz; Preferably, resonance peak can all between frequency 100Hz-18000Hz, and the crest frequency that at least there are two resonance peaks differs at least 1000Hz; More preferably, resonance peak can all between frequency 100Hz-18000Hz, and the crest frequency that at least there are two resonance peaks differs at least 2000Hz; Further preferably, resonance peak can all between frequency 100Hz-18000Hz, and the crest frequency that at least there are two resonance peaks differs at least 3000Hz; Still more preferably, resonance peak can all between frequency 100Hz-18000Hz, and the crest frequency that at least there are two resonance peaks differs at least 4000Hz.Resonance peak can all between frequency 200Hz-12000Hz, and the crest frequency that at least there are two resonance peaks differs at least 400Hz; Preferably, resonance peak can all between frequency 200Hz-12000Hz, and the crest frequency that at least there are two resonance peaks differs at least 1000Hz; More preferably, resonance peak can all between frequency 200Hz-12000Hz, and the crest frequency that at least there are two resonance peaks differs at least 2000Hz; Further preferably, resonance peak can all between frequency 200Hz-12000Hz, and the crest frequency that at least there are two resonance peaks differs at least 3000Hz; Still more preferably, resonance peak can all between frequency 200Hz-12000Hz, and the crest frequency that at least there are two resonance peaks differs at least 4000Hz.Resonance peak can all between frequency 500Hz-10000Hz, and the crest frequency that at least there are two resonance peaks differs at least 400Hz; Preferably, resonance peak can all between frequency 500Hz-10000Hz, and the crest frequency that at least there are two resonance peaks differs at least 1000Hz; More preferably, resonance peak can all between frequency 500Hz-10000Hz, and the crest frequency that at least there are two resonance peaks differs at least 2000Hz; Further preferably, resonance peak can all between frequency 500Hz-10000Hz, and the crest frequency that at least there are two resonance peaks differs at least 3000Hz; Still more preferably, resonance peak can all between frequency 500Hz-10000Hz, and the crest frequency that at least there are two resonance peaks differs at least 4000Hz.In order to obtain reasonable effect further, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 20000Hz, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 10000Hz, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 5000Hz, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 2000Hz, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 1000Hz, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 500Hz, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 300Hz, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 200Hz, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-20000Hz scope, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-10000Hz scope, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-5000Hz scope, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-2000Hz scope, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-1000Hz scope, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-500Hz scope, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-300Hz scope, preferably, at least two resonance peaks can within people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-200Hz scope, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 20000Hz, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 10000Hz, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 5000Hz, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 2000Hz, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 1000Hz, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 500Hz, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 300Hz, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is not higher than 200Hz, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-20000Hz scope, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-10000Hz scope, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-5000Hz scope, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-2000Hz scope, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-1000Hz scope, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-500Hz scope, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-300Hz scope, more preferably, transducing head produces at least two resonance peaks at people's ear range of audibility, and the resonance peak produced by the first vibration-transmitting plate is in 20-200Hz scope.In one embodiment, by the triple compound vibration systems utilizing oscillating plate, the first vibration-transmitting plate and the second vibration-transmitting plate to form, the frequency response as shown in Figure 12-B can be obtained, triple compound vibration systems of the first vibration-transmitting plate are had to create three obvious resonance peaks, create flat frequency response more, improve tonequality.

By changing the parameters such as the size of the first vibration-transmitting plate and material, resonance peak can be allowed to be moved, the final frequency response obtained ideally.Such as, the stiffness factor of the first vibration-transmitting plate is reduced to design load, resonance peak can be allowed to move to design attitude to low frequency, bone-conduction speaker frequency response can be made to be highly improved in the sensitivity of low-frequency range, be easy to obtain better tonequality.As shown in Figure 12-C, when the stiffness factor of the first vibration-transmitting plate reduces gradually (described first vibration-transmitting plate from hard to soft), resonance peak moves to low frequency direction, and the sensitivity of bone-conduction speaker frequency response in low-frequency range is significantly improved.Preferably, the first vibration-transmitting plate is a flexure strip.This elasticity is determined by the many-side such as material, thickness, structure of the first vibration-transmitting plate.The material of the first vibration-transmitting plate, such as but not limited to, steel (such as but not limited to stainless steel, carbon steel etc.), alloy in lightweight (such as but not limited to aluminium alloy, beryllium copper, magnesium alloy, titanium alloy etc.), plastic cement (such as but not limited to high-molecular polythene, blow-molding nylon, engineering plastics etc.) also can be other single or composite materials that can reach same performance.For composite material, such as but not limited to reinforcing materials such as glass fibre, carbon fiber, boron fibre, graphite fibre, graphene fiber, silicon carbide fibre or aramid fibers, also can be other compound that is organic and/or inorganic material, the such as all kinds of fiberglass of glass fiber reinforcement unsaturated polyester, epoxy resin or phenolic resin as matrix resin composition.The thickness of the first vibration-transmitting plate is not less than 0.005mm, and preferably, thickness is 0.005mm-3mm, and more preferably, thickness is 0.01mm-2mm, more preferably, thickness is 0.01mm-1mm, and further preferably, thickness is 0.02mm-0.5mm.The structure of the first vibration-transmitting plate can be set to ring-type, preferably, comprise at least one annulus, preferably, comprising at least two annulus, can be donut, also can be non-donut, be connected by least two poles between annulus, pole, from outer shroud to inner ring center radiation, further preferably, comprises at least one oval annulus, further preferably, comprise at least two oval annulus, different oval annulus has different radius of curvature, is connected between annulus by pole, still more preferably, the first vibration-transmitting plate comprises at least one Q-RING.First vibration-transmitting plate structure also can be set to sheet, preferably, arranges pierced pattern above, and the area of pierced pattern is not less than the area not having hollow out.In more than describing, material, thickness, structure can be combined into different vibration-transmitting plates.Such as, ring-type vibration-transmitting plate has different thickness distribution, and preferably, strut thickness equals annulus thickness, and further preferably, strut thickness is greater than annulus thickness, and still more preferably, the thickness of inner ring is greater than the thickness of outer shroud.

Specific embodiment

Embodiment one

Can select to adopt multi-frequency response curve in a kind of portable ossiphone, user or tester can select suitable hearing aid response curve to compensate according to the real response curve of hearing system.In addition, according to actual needs, the vibrating device in ossiphone, make hearing aids can produce more satisfactory frequency response in particular frequency range, such as frequency range is at 500Hz ~ 4000Hz.

Embodiment two

A kind of vibration generating portion of bone-conduction speaker as shown in figure 13.Wherein, transducing head comprises by magnetic conductive board 1310, the magnetic circuit system that magnet 1311 and magnetic conductor 1312 form, oscillating plate 1314, coil 1315, the first vibration-transmitting plate 1316 and the second vibration-transmitting plate 1317.Shell 1319 given prominence to by panel 1313, and vibrating reed 1314 is bondd by glue, and transducing head is fastened on shell 1319 by the first vibration-transmitting plate 1316, forms suspended structure.

In the process of bone-conduction speaker work, by oscillating plate 1314, triple vibrational systems of the first vibration-transmitting plate 1316 and the second vibration-transmitting plate 1317 composition can produce more flat frequency response curve, thus improve the tonequality of bone-conduction speaker.

Described first vibration-transmitting plate can adopt such as, but not limited to, materials such as stainless steel, beryllium copper, plastic cement, Merlon, and its thickness is in the scope of 0.01mm-1mm.

Embodiment three

The feature of the present embodiment is: as shown in figure 14, and panel 1413 increases vibration passing layer 1420 (such as but not limited to silica gel), and vibration passing layer 1420 can produce certain deformation and adapt to skin shape.The part that vibration passing layer 1420 contacts with panel 1413 higher than the part that vibration passing layer 1420 does not contact with panel 1413, forming station stage structure.The part (part that in Figure 14, vibration passing layer 1420 does not protrude) do not contacted with panel 1413 at vibration passing layer 1420 designs one or more aperture 1421.Leakage sound can be reduced: panel 1413 is died down by the connection of vibration passing layer 1420 with shell 1419 at vibration passing layer design aperture, the vibration that panel 1413 is delivered to shell 1419 by vibration passing layer 1420 reduces, thus decreases shell 1419 and vibrate the leakage sound brought; The part that vibration passing layer 1420 does not protrude arranges aperture 1421 long-pending reduction below, and the air that can drive reduces, and the leakage sound caused by air vibration reduces; After the non-projection of vibration passing layer 1420 arranges aperture 1421, in the shell that the air vibration in housing is formed, sound wave is guided out outside shell, and the leakage speech ripple that the air vibration caused with shell 1419 is formed is cancelled out each other, and reduces to leak sound.

Embodiment four

The feature of the present embodiment is: because panel protrudes speaker housings, use connector to be connected with speaker housings by panel simultaneously, the degree of coupling of panel and shell reduces greatly, and connector can provide certain deformation, panel is made to be have the higher degree of freedom fitting with user, can adapt to complicated binding face (in Figure 15-A shown in right figure) better, described connector can make panel produce the inclination of certain angle relative to shell.Preferably, angle of inclination is no more than 5 ゜.

Further, the vibration efficiency of loud speaker is different along with the difference of fit-state.Good fit-state has higher vibration passing efficiency.As shown in Figure 15-B, the vibration passing efficiency under the good state of thick line display laminating, the vibration passing efficiency under the state that fine rule display laminating is bad, can find out, good fit-state vibration passing efficiency is higher.

Embodiment five

The difference of the present embodiment and embodiment three is: increase a surrounding edge at the edge of shell, and in the process of shell and skin contact, surrounding edge can make distribution of forces more even, increases the comfort level that bone-conduction speaker is worn.As shown in figure 16, there is difference in height d between surrounding edge 1610 and panel 1613 ₀.The skin power acted on panel 1613 makes the distance d between panel 1613 and surrounding edge 1610 reduce, and the pressure when between bone-conduction speaker and user is greater than connector 1616 shape and becomes d ₀time suffered power time, unnecessary clamping force can be delivered to skin via surrounding edge 1610, and does not have an impact to the clamping force of oscillating component, makes the consistency of clamping force higher, thus ensures tonequality.

Embodiment six

As shown in figure 17, panel 1710 is shown in dotted line with the link 1720 of transducing head (not drawing in fig. 17) for panel-shaped.Transducing head passes through link 1720 by vibration passing to panel 1710, then the position residing for link 1720 is the centre of oscillation of panel 1710.The distance on center O distance panel 1710 both sides of link 1720 is respectively L ₁and L ₂.By changing the size of panel 1710, the position of link 1720 on panel 1710 can change the coating performance of panel and skin and the transmission efficiency of vibration.Preferably, L ₁and L ₂ratio set for being greater than 1, more preferably, L ₁and L ₂ratio set for being greater than 1.61, further preferably, L ₁and L ₂ratio set for being greater than 2.Again such as, large panel, middle panel and small panel can be selected to act in vibrating device.Large panel mentioned here refers to the panel described by Figure 17, and panel 1710 area is greater than the area of link 1720, and middle panel refers to that panel 1710 is identical with link 1720 size, and small panel refers to that the area of panel 1710 is less than the situation of link 1720.The different panel of size and the position of different link 1720, its vibration of transmitting has different distributions on wearer's binding face, and then can bring the difference of volume, tonequality.

The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be noted that; for the person of ordinary skill of the art; without departing from the concept of the premise utility; some distortion and improvement can also be made; the mode that several change bond-conduction sound disclosed in such as this specification transmit; combination in any and amendment can be carried out, but these amendments and combination are still within claims of the present utility model.

Claims

1. a bone-conduction speaker, is characterized in that, comprising:

One shell, a transducing head, one first vibration-transmitting plate;

Described first vibration-transmitting plate is connected by physics mode with between described transducer apparatus;

Described first vibration-transmitting plate is connected by physics mode with between described shell;

Described first vibration-transmitting plate can make loud speaker produce a resonance peak;

Described transducing head can produce at least one resonance peak;

2. bone-conduction speaker as claimed in claim 1, it is characterized in that, described transducing head comprises at least one oscillating plate and one second vibration-transmitting plate, and this transducing head can produce at least two resonance peaks.

3. bone-conduction speaker as claimed in claim 2, is characterized in that, within the audio frequency range that described two resonance peaks all can be heard at people's ear.

4. bone-conduction speaker as claimed in claim 2, is characterized in that, described transducing head comprises at least one voice coil loudspeaker voice coil and at least one magnetic circuit system; Described voice coil loudspeaker voice coil and described oscillating plate physical connection, described magnetic circuit system and described second vibration-transmitting plate physical connection.

5. bone-conduction speaker as claimed in claim 2, it is characterized in that, the stiffness factor of oscillating plate is greater than the stiffness factor of the second vibration-transmitting plate.

6. bone-conduction speaker as claimed in claim 2, it is characterized in that, the second vibration-transmitting plate is flexure strip.

7. bone-conduction speaker as claimed in claim 1, is characterized in that, comprise at least one contact-making surface, and described contact-making surface contacts with user and transmitting vibrations;

8. bone-conduction speaker as claimed in claim 1, it is characterized in that, described first vibration-transmitting plate is flexure strip.

9. bone-conduction speaker as claimed in claim 8, it is characterized in that, described first vibration-transmitting plate is converge like the spokes of a wheel at the hub at least two the first poles to center.

10. bone-conduction speaker as claimed in claim 8, it is characterized in that, the first described vibration-transmitting plate thickness is 0.005mm-3mm.